Walking beam saddle



May 10, 1938. A. N. PORTER WALKING BEAM SADDLE Filed Oct. 21, 1936 s. VII/III,

INVENTOR lbs/'7 N Porrer:

ATTORN EY Patented May 10, 1938 1 2,116,932

UNITED STATES PATENT OFFICE WALKING BEAM SADDLE Albert N. Porter, Tulsa, Okla., assignor to J. F. Darby, Tulsa, Okla.

Application October 21, 1936, Serial No. 106,786

2 Claims. (01. 308--2) This invention relates to Walking beam saddles face I4 seated upon the flat upper portions I5 such as used for pivotally mounting a walking of theside irons so that when the fastening debeam on the Samson post of a pumping rig or vices I2 are inserted the cross plate is drawn into the like, and has for its principal objects to prorigid relation therewith. Extending across the vide a device of this character having a knife plate I3 transversely of the center line of the 5 edge bearing for eliminating the necessity of host is a substantially V-shaped rib it having an lubrication; to provide means for quickly releasapical or knife-like edge I! forming a fulcruming ing the pivotal connection when the walking point for the rocker member I8 on the saddle. beam is to be raised to an out-oi-the-way posi- The rocker member includes a plate portion I9 10 tion as when pulling rods, tubing or performing having a flat upper face 20 for seating the walk- 10 other Well operations; and to provide means for ng be m h e s of the P Portion v shifting the seat of the beam from its knife edge ransv rse ri s 22 p vi d wi grooves 3 f support when it is moved out of position. accommodating the cross bar. portions 24 of U Another important object of the invention is Cl p The s of the U ps extend to provide a knife edge bearing arrangement upwardly over the sides of the walking beam and 15 which is self-clearing of dust, dirt and other ace p d d W threaded s 25 extending cumulations. through openings 21 in keeper plates 28 over- In accomplishing these and other objects of ly g the D f e beam, and Secured y nuts 29 the invention, as hereinafter pointed out, I have threaded on the projecting ends of the U-shaped provided improved details of structure, the preclamp 2o ferred form of which is illustrated in the ac- The central p rtion of he r ck r plate has an companying drawing, wherein: integral depending trunnion 30 having project- Fig. 1 is a side elevational iew of the upper ing ends 3| and 32 so that the trunnion member portion of a Samson post and the adjacent part is substantially the length of the knife edge bearof a walking beam illustrating application of a ins The lower portion of t trunnion memsaddle embodying the features of the present her is p ovid d With a ongitudinal V-shaped invention. groove having greater angle than the angle of Fig. 2 is a section through the walking beam on the V-shaped rib I6 so as to allow free rocking the line 22 of Fig. 1. movement of the walking beam when the knife Fig. 3 is a section on the line 3-3 of Fig. 2 but edge bearing s engaged in the b tto of the V- 30 showing the walking beam moved out of funcshaped groove as shown in Fig. 1. tioning position. In order to prevent lateral movement of the Fig. 4 is a detail perspective view of the parts rocker member relatively to the fulcrum memof the walking beam saddle shown in disassemher, the sides of the plate l3 are provided with bled spaced relation. upwardly extending guard flanges 33 and 34 over- 3 Referring more in detail to the drawing: pp ns y engaging h e faces 3 nd 6 of the l designates a saddle constructed in accordtrunnion as best illustrated in Fig. 1. The upper ance with the present invention for mounting a periphery of the projecting portions 3| and 32 of walking beam or similar rocking member 2 upon the trunnion are of arcuate shape, having their 0 a Samson post or similar support 3. The saddle axes of curvature coincident with the base of the includes a fulcrum member 4 consisting of side V-shaped groove. Extending over rounded ends irons 5 and 6 attached to the Samson post 3 of the trunnion are hold-down clamps 31 and by means of studs 1 extending through suitable 38 having arcuate portions 39 conforming to the openings in the side irons and through aligning curvature of the trunnion. The clamps are pivopenings in the post, the studs being secured by otally connected at one of their ends to lugs 40 5 nuts 8 mounted on the threaded ends thereof as and 4| on hinge pins 42 and 43, the lugs being shown in Figs. 1 and 2. The side irons project located adjacent the forward edge of the fulabove the upper end of the post and terminate crum plate. The clamps also have rearwardly in laterally extending arms 9 engaging over the extending slotted arms 44 and 45 overlying uptop of the post, the arms being provided with wardly extending pairs of spaced cars 46 and 41 50 notched portions ID on their under side to acat the opposite side of the fulcrum plate. commodate the heads I I of fastening devices Mounted between the pairs of ears 46 and 41 on such as bolts I2 for attaching a cross plate I3 pins 48 are eye bolts 49 and 50. The shanks 5| of the fulcrum member to the side irons. The and 52 of the eye bolts are threaded and are 5 cross plate I3 has a substantially flat bottom suradapted to engage in the slotted arms 44 and 45 55 Lil of the clamps. Mounted on the shanks of the eye bolts are washers 53 and nuts 54 by which the clamping members are secured in holding engagement with the trunnions. The ends of the clamp arms are preferably provided with hookshaped terminals 55 and 56 to lock the eye bolts in engagement with the clamps when the nuts are drawn tight.

Formed on the upper face of the fulcrum plate and extending parallel with the V-shaped rib is an off-set rib 51 having an arcuate seat 58 engageable by a rounded rib 59 projecting from the trunnion member on the rear side of the V- shaped groove as best shown in Fig. 3 when the walking beam is moved out of functioning position as shown in Fig. 3.

When a walking beam is actuated the trunnion of the rocker member rocks upon the knife edge of the fulcrum member. The clamping members engaged over the ends of the trunnion hold the trunnion in engagement with the knife edge of the fulcrum so as to prevent movement tendency of the rocker member to raise from its Divotal seating engagement with the fulcrum memher.

When it-becomes necessary to move the walkingbeam out of functioning position as when pulling rods,'tubing or performing other operations, the nuts on the eye-bolts are loosened so that the boltsmay'beswung out of the notched ends of the clamps. The clamps can then be swung back as shown in-Fig. 3. The forward end of the walking beam isthen free to be tipped upwardly so that the rounded rib 59 engages in the seat 58 and the rib raises the trunnion from engagement with the knife edge of the fulcrum so that the-weight of the beam-is disengaged with the knife edge.

From the foregoing it is obvious that I have provided a walking beam saddle which due to the knifeedge bearing does not'require lubrication and the alignment ofthe knife edge bearing issuch that it is self-cleaning of dust, dirt and the like that might collect on the saddle member.

What I claim and desire to secure by Letters Patent is:

1. A beam saddle including a pair of side irons, means securing the side irons to the Samson-post of a pumping rig, a fulcrum member fixed to the side irons and extending across the top of the Samson-post, said fulcrum member having a substantially line edge bearing extending continuously across the width of said member, a rocker'member having trunnions provided with a seat coextensively engaging said line bearing of the fulcrum member to form an axis of oscillation for a rocker beam of the pumping rig,

means securing said beam on the rocker member,

means carried by the fulcrum member and extending over said trunnions to retain the rocker member on the fulcrum member, and means on the rocker member engageable with the fulcrum member to lift said seat from said line hearing when said beam is moved out of functioning position.

2; A beam saddle'including a pair of side irons, means securing the side irons to the Samsonpost of a pumping rig, a fulcrum member fixed tolthe side irons extending across the top of the Samson-postand having a substantially line edgebearing extending continuouslyacross the width of said. member, a rocker member having trunnions provided witha seat coextensively engaging said linebearing. of the fulcrum member to form an axis of oscillation for a rocker beam of the pumping rig, means securing said'beam on the rocker member, means carried'by thefulcrum member and extending over said trunnions to retain the rocker'member on the fulcrum member, said rocker member having a rib-like projection-extending therefrom, and a seat on the fulcrum member adapted to be engaged by said rib when the rocker member is moved beyond its normal oscillatoryposition tolift saidbearing seat from engagement with the line bearing on therfulcrum member.

ALBERT .N. PORTER. 

